O2

HiI have received my upgrade of a Samsung s20 FE today.I have inserted the SIM that was in my S8 into the S20. Should I have used the SIM provided as it is built for 5G. Do I need to swap my current sim to this one. It seems to be working fine.Thank-...

I have ordered a new samsung S20 FE on upgrade. It isn't currently in stock.Am I still able to to take advantage of the cashback offer when the phone arrives?